Dielectric composition and multilayer capacitor
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsHyoung Uk Kim, Jae Sung Park, Jong Ho Lee, Eun Ha Jang, Jong Hwan Lee
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Abstract
A dielectric composition and a multilayer capacitor including the same are disclosed. The dielectric composition including a BaTiO3-based main ingredient, and an auxiliary ingredient including rare earth elements, wherein the rare earth elements include Dy and Eu, Dy and Eu molar contents based on 100 moles of the BaTiO3-based main ingredient satisfy conditions of 0.10<Eu/(Dy+Eu)≤0.50 and 0.60≤Dy+Eu≤1.0, and the rare earth elements do not include another element in a higher molar content than Dy and Eu.
Claims16
A multilayer capacitor comprising:
- a body including a dielectric layer and a plurality of internal electrodes stacked with the dielectric layer interposed therebetween;
- and
- external electrodes disposed on the body and connected to the plurality of internal electrodes,
- wherein the dielectric layer includes a dielectric grain,
- the dielectric grain includes a BaTiO3-based main ingredient and an auxiliary ingredient including rare earth elements, the rare earth elements include Dy and Eu, Dy and Eu molar contents based on 100 moles of the BaTiO3-based main ingredient satisfy conditions of 0.10<Eu/(Dy+Eu)≤0.50 and 0.60≤Dy+Eu≤1.0, and the rare earth elements do not include another element in a higher molar content than Dy and Eu, and
- the dielectric grain has a core-shell structure including a core portion and a shell portion having a different composition from the core portion.
A multilayer capacitor comprising:
- a body including a dielectric layer and a plurality of internal electrodes stacked with the dielectric layer interposed therebetween, wherein the dielectric layer includes a dielectric grain including a BaTiO3-based main ingredient and an auxiliary ingredient including rare earth elements, the rare earth elements include Dy and Eu, Dy and Eu molar contents based on 100 moles of the BaTiO3-based main ingredient satisfy conditions of 0.10<Eu/(Dy+Eu)≤0.50;
- and
- external electrodes disposed on the body and connected to the plurality of internal electrodes,
- wherein the dielectric grain has a core-shell structure including a core portion and a shell portion having a different composition from the core portion.
Dependencies are inferred from the claim text.